Fitment: 1998-2003 Ford E-350 1999-2003 Ford E-450 2002-2003 Ford E-550 1998-1999 Ford Econoline Super Duty 2000-2003 Ford Excursion 1999-2003 Ford F-250 Super Duty 1999-2003 Ford F-350 Super Duty 1999-2003 Ford F-450 Super Duty 1999-2003 Ford F-550 Super Duty How to replace A Cooling Fan: 1. Disconnect Power Use a wrench to disconnect the negative battery terminal. Key detail: Wrap the disconnected cable end with a cloth or tape so it doesn't accidentally spring back and touch the battery terminal. 2. Remove the Old Fan .